Fall protection system
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Solution Overview
Problem
Existing fall protection systems for elevated structures, such as roofs, lack versatility, are not easily retrofitted, and often damage the structure due to high loads, fail to provide continuous coverage, and lack integrated waterproofing and ventilation options.
Innovation Solution
A modular fall protection system comprising a structural sheet with attachment panels, anchorage connectors, rail clamps, and sliders that can be easily installed on new or existing roofs, offering both discrete and continuous protection, with integrated waterproofing and ventilation features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cable safety systems are used to provide continuous coverage, then user access to large areas is enabled, but the system is obtrusive and impacts aesthetic qualities
Solution Approach 1:
The patent uses a thin rail member that can be mounted flush with or slightly above the roof surface, creating a low-profile system that is barely visible. This resolves the contradiction by providing continuous coverage through the rail-traveler mechanism while maintaining aesthetic quality through the minimal visual impact of the thin rail design.
Solution Approach 2:
The patent transitions from a three-dimensional cable system suspended in air to a two-dimensional rail system mounted on the roof surface. This dimensional change reduces the visual profile and aesthetic impact while maintaining continuous coverage capability through the rail's length.
2Adaptability or versatility
If cable safety systems are used, then continuous coverage is provided, but cable deflection restricts use on low level structures
Solution Approach 1:
The patent uses a rigid or semi-rigid rail member that maintains its shape and position, eliminating the deflection problems of flexible cables. The rail's structural integrity ensures reliable fall arrest on low level structures while still providing continuous coverage through its length.
Solution Approach 2:
The patent employs a simple, robust rail design that can be easily replaced if damaged, rather than relying on complex cable systems that deflect and compromise reliability. This straightforward approach ensures consistent performance for fall arrest.
3Adaptability or versatility
If cable safety systems are installed, then continuous coverage is achieved, but high loads can damage the building structure
Solution Approach 1:
The patent incorporates load distribution features into the rail design from the beginning, such as attachment points spaced along the rail and connection to multiple roof anchors. This preliminary design ensures that fall loads are distributed across multiple attachment points rather than concentrated at single cable points, preventing structural damage while maintaining continuous coverage.
Solution Approach 2:
The patent divides the continuous rail into segments with multiple attachment points to the roof structure. When a fall load occurs, the force is distributed across these segmented attachment points rather than concentrated at a single location, reducing the risk of structural damage while maintaining continuous coverage.
4Shape
If safety rail systems with solid beams are used, then low profile is achieved, but special fixings are required and retrofittal is difficult
Solution Approach 1:
The patent designs the rail member and attachment system to work with multiple roof types and conditions. The attachment panel can be configured for different roof materials (asphalt shingles, metal, tile) and the rail can be mounted in various configurations, making the system universally applicable and easily retrofitted to existing structures while maintaining a low profile.
Solution Approach 2:
The patent uses adjustable and adaptable attachment mechanisms that can be configured for different installation scenarios. The attachment panel includes multiple hole patterns and mounting options that can be adapted to various roof types, enabling easy retrofittal without requiring special fixings for each specific roof condition.
5Reliability
If existing fall protection systems are installed, then protection is provided, but integrated waterproofing is lacking
Solution Approach 1:
The patent combines the fall protection rail system with integrated waterproofing features, including flashing elements and sealant application points built into the attachment panel design. This merging of fall protection and waterproofing functions into a single integrated system provides both reliable fall protection and effective water sealing without requiring separate systems.
Solution Approach 2:
The patent uses composite construction combining the rail member, attachment panel, and waterproofing elements into an integrated assembly. This composite approach allows the fall protection system to inherently provide waterproofing through the integrated design of attachment components that seal around roof penetrations.
Data Source
AI summary
A module for a fall protection system comprises a structural sheet having a ridge and an attachment panel extending laterally therefrom and one or more attachment sections. The attachment panel can be secured to a structure. The module has one or both of: (i) an anchorage connector attached to the ridge at an attachment section; and (ii) a rail clamp having a sleeve portion and a leg portion attached to the ridge at an attachment section; a rail extending through and supported by the sleeve portion; and a slider supported on the rail. The slider is slideably movable along the rail and has a slider anchorage connector. The ridge may be received in a flashing ridge having a flashing extending laterally therefrom to provide coverage for the attachment panel. A person may be attached to the anchorage connector or the slider anchorage connector via a safety line.